Final answer:
Lee Harvey Oswald, who was arrested for the assassination of President Kennedy, was shot and killed by Jack Ruby, a Dallas nightclub owner, during his transfer to jail. The incident fueled public interest and conspiracy theories, leading to the formation of the Warren Commission, which concluded Oswald acted alone.
Step-by-step explanation:
Lee Harvey Oswald was the employee at the Texas School Book Depository who was arrested on suspicion of assassinating President John F. Kennedy. Oswald was also a trained sniper. President Kennedy was killed on November 22, 1963, while parading through Dallas, and Oswald was captured later that day. However, during his transfer from the Dallas police headquarters to the county jail, Lee Harvey Oswald was fatally shot. He was killed by Jack Ruby, a local nightclub owner. Ruby justified his actions by claiming he acted to avenge the president's death. This event was broadcast live on television, leaving a strong impression on the American public.
Afterward, to curb the spread of conspiracy theories and provide official answers, President Lyndon B. Johnson appointed the Warren Commission, led by Chief Justice Earl Warren, which eventually concluded that Oswald acted alone. Despite this official finding, the event sparked numerous conspiracy theories that persist to this day.